I recently purchased an LG sound bar to go with my GA7900 series TV, and it advertised using the "LG Sound Sync" feature to match the TV remote with the control for the device. Upon further reading in the manual it notes that the TV must be equipped with "LG Sound Sync." This is a feature supposedly installed on 2013 models but I can't seem to find it on mine. Doing some further research, I don't see the feature on any 2013 models. Which TVs contain this feature, and am I mistaken in thinking that it isn't on mine?